1. Ubuntu Security Notices
  2. USN-6474-1

USN-6474-1: xrdp vulnerabilities

Publication date

8 November 2023

Overview

Several security issues were fixed in xrdp.

Releases

Packages

  • xrdp - Remote Desktop Protocol (RDP) server

Details

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. (CVE-2022-23479, CVE-2022-23481, CVE-2022-23483,
CVE-2023-42822)

It was discovered that xrdp improperly handled session establishment
errors. An attacker could potentially use this issue to bypass the
OS-level session restrictions by PAM. (CVE-2023-40184)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds writes. An attacker
could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 18.04...

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. (CVE-2022-23479, CVE-2022-23481, CVE-2022-23483,
CVE-2023-42822)

It was discovered that xrdp improperly handled session establishment
errors. An attacker could potentially use this issue to bypass the
OS-level session restrictions by PAM. (CVE-2023-40184)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds writes. An attacker
could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23468)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS
and Ubuntu 22.04 LTS. (CVE-2022-23480, CVE-2022-23482, CVE-2022-23484)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-23477, CVE-2022-23493)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds writes. An attacker
could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-23478)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-23613)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
22.04 jammy xrdp –  0.9.17-2ubuntu2+esm1  
20.04 focal xrdp –  0.9.12-1ubuntu0.1+esm1  
18.04 bionic xrdp –  0.9.5-2ubuntu0.1~esm2  
16.04 xenial xrdp –  0.6.1-2ubuntu0.3+esm3  
14.04 trusty xrdp –  0.6.0-1ubuntu0.1+esm3  

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References

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